Improvement in hanging circular saws



H. KHAN &J. G. AL

EXA-NDE'R. Hanging Circular -Saws.

No. 207,810. Patented Sept. 10, I878.

attachment. views of one of the disks to clamp the saw.

the arbor. These strips may be "IIENRY KEAN, OF KINNICKINNIO, \VISCONSIN, AND JAMES G. ALEXANDER,

OF BOSTON, MASSACHUSETTS.

IIMPR OVEMENT IN HANGING CIRCULAR SAWS.

T Specification forming part of Letters Patent No. 207.810, dated September 10,1878; application filed March 2, 1878.

To all whmnit may concern: Be it known that we, HENRY KEAN, of Kinn'ickinnic, in the county of St. Croix and State ofwiseonsin, and Jams G. ALEXANDER, of Boston, in the county of Suffolk and State of a. lllassaclm'setts, have invented a new and useful Improvement in a Grooviug Attachment a for Saw-Arbors, which improvement. is fully forth in the following specification, referto the saw-arbor as to cut a groove of any desirable width-that is, within suitable limits.

In the drawings, Figure 1 is a side, and Fig. 2 a front, view of a saw and arbor having our Figs. 3 and4 are side and front in Fig. 2 the saw is shown by the full lines win an inclined position, while the dotted lines show it at right angles to the arbor.

The arbor A is of the usual form, having the shoulder a, the thread I), and nut c. On the arbor, against the shoulder a. is the flange B. Inside'of the flange B is the disk 0,.which 1 may be formed with, as a part of, the flange B. Inside of the nut c is the flange D. The

flanges]; and D and the disk 0 are fitted to y and made to slide on the arbor.

flange D and disk 0 are the two disks E and Between the F, and between these two disks is the saw- .plate G, to be clamped firmly thereby. The

disks E and F have the center holes through which the arbor passes somewhat larger than the arbor, so that they may be inclined thereto, and each of them has two radial stri s, d

oined thereon upon direct opposite si es 0 into pieces. fastened firmly to the disks or a formed orcast as one piece therewith. Each of the strips d has a V edge, as shown, which is to set-into one of the corresponding grooves either sepuc in its opposite flange D or disk 0. Through the flange Dare screwed two set-screws, f, which bear endwise against the disk E, recesses or indentations 9 being formed therein to receive them. I

Now, it will be readily seen that by setting the disks E and F so that the V edges oi the strips 11 are all in the same plane, by means of the screws f, the disksE and F, and h nce the saw, may. be set-at any desired angle of inclination, or at right angles to the arbor, and that the saw may then be firmly clamped in that position by means of the nut c. When so set and secured the saw will cut a grooveof the width desired.

When the saw is to be run at right angles to the arbor that position may be insured by turning one of the disks E and F so that one set of the strips d is swung out of the plane of the other, at right angles thereto, if desired, and then loosening the screws f and tightening up by means of the nut 0.

Of course changing the strips d from the disks E and F to the opposite flanges and making corresponding changes of the grooves v IIENRY KEAN. JAMES G. ALEXANDER.

Witnesses:

Enw. Dnnmm, Hanan W. Bmgunn.

, will not alter the 

